2x PG545XL Black Remanufactured Ink CartridgesBlack - 15mlCartridges will NOT display ink levels. This is quite normal for remanufactured ink cartridges and will not effect the printing quality or page yield. When you see the low ink warning it DOES NOT mean it has run out of ink. Just press and hold the red cancel button on your printer for 5 seconds to resume printingFully print tested before dispatchProvides a lower printing cost than using original Canon cartridges without compromising on print quality